 <li>
    <button type="button" data-toggle="block-option" data-action="" onclick="javascript:history.go(-1);"><i class="fa fa-arrow-left"></i></button>
</li>
 <li>
 <input type="hidden" value="http://{$_SERVER.HTTP_HOST}{$_SERVER.REQUEST_URI}" id="nowurl">
    <button type="button" data-toggle="block-option" data-action="" onclick="window.open($('#nowurl').val())"><i class="fa fa fa-opencart"></i></button>
</li>
 <li>
    <button type="button" data-toggle="block-option" data-action="" onclick="javascript:history.go(1);"><i class="fa fa fa-arrow-right"></i></button>
</li>

<li>
    <button type="button" data-toggle="block-option" data-action="refresh_toggle" data-action-mode="demo"><i class="si si-refresh"></i></button>
</li>
<li>
    <button type="button" data-toggle="block-option" data-action="fullscreen_toggle"></button>
</li>